AffidavitDonda writes: IBM researchers have built the first integrated circuit (IC) based on a graphene transistor.

The circuit, built on a wafer of silicon carbide, consists of field-effect transistors (FETs) made of graphene. The IC also includes metallic structures, such as on-chip inductors and the transistors' sources and drains.

The circuit the team built is a broadband radio-frequency mixer, a fundamental component of radios that processes signals by finding the difference between two high-frequency wavelengths.